8166380566533 has 8 divisors (see below), whose sum is σ = 12444008482368. Its totient is φ = 4666503180864.

The previous prime is 8166380566507. The next prime is 8166380566541. The reversal of 8166380566533 is 3356650836618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8166380566533 - 2¹⁴ = 8166380550149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166380566583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194437632516 + ... + 194437632557.

It is an arithmetic number, because the mean of its divisors is an integer number (1555501060296).

Almost surely, 2^{8166380566533} is an apocalyptic number.

It is an amenable number.

8166380566533 is a deficient number, since it is larger than the sum of its proper divisors (4277627915835).

8166380566533 is a wasteful number, since it uses less digits than its factorization.

8166380566533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388875265083.

The product of its (nonzero) digits is 55987200, while the sum is 60.

The spelling of 8166380566533 in words is "eight trillion, one hundred sixty-six billion, three hundred eighty million, five hundred sixty-six thousand, five hundred thirty-three".